Radio interface



FIG. 1 is a front elevational view of a radio interface showing my new design;

FIG. 2 is side elevational view thereof taken from the left of FIG. 1;

FIG. 3 is side elevational view thereof taken from the right of FIG. 1;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a radio interface, as shown and described. 